Here's a hypothetical, what is the real cost, he said they were using spot instances too. A huge spike in demand might have an effect on price, pushing the cost

Here's a hypothetical, what is the real cost, he said they were using spot instances too. A huge spike in demand might have an effect on price, pushing the cost up for all legitimate users. As far as the reserved instances, they were there, not being used presumably. They don't really lose anything except possibly some electricity and bandwidth costs?